Material handling cyclopedia; a reference book covering definitions, descriptions, illustrations and methods of use of material handling machines employed in industry (1921)
Wright, Roydon Vincent, 1876- ed, Little, John G., joint ed, Augur, Robert C., joint ed · New York, N.Y., Simmons-Boardman Publishing Co · leaf 215
he air from thepressure line is admitted to the upper chamber, thus equal-izing the pressure, which, because of the greater area ofthe upper side of the piston—due to the area occupied bythe piston rod—causes the piston to descend and lower thehoist. In another method of operation the air pressure… … ft—0 ^ ^ wJ^ Z i of> ^ D U M -5 2U So
Hoisting machinery · Conveying machinery
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![An illustration from The Mason Machine Works, Taunton, Massachusetts, U.S.A., inventors and builders of cotton machinery : Founded 1842 ; Incorporated 1873 ; [Catalogue] (1898)](https://img.insideoutlibrary.com/img/200/ia-masonmachinework00maso-159-49.webp)
